Apparatus and process for molding concrete forms.



H.- A. LOSER. v APPARATUS AND PROCESS FOR MOLDING GONGRBTE FORMS.

APPLICATION FILED MAR. 10, 1909.

Patented: Oct. 19, 1909 3r-BEEETS-BHEBT 1.

/z/a/LCL H. A. LOSER. APPARATUSAND rnooEss r03 MOLDING CONCRETE FORMS.APPLICATION FILED EAR. 10, 1909.

937,620. r Patented Oct. 19, 1909.

3 SHEETS-SHEET 2.

H. A. LOSER.

APPARATUS AND PROCESS FOR MOLDING CONCRETE FORMS. APPLICATION FILED MAR.10, 1909.

3 SHEETS-SHEET 3.

ANDREW vsv Gmnm co.. mamumunmmzns. WASHINGTON. n. c.

HARRY A. LOSER, OF WEST LAFAYETTE,'INIDIANA.

APPARATUS AND PROCESS FOR MOLDING CONCRETE FORMS.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed. March 10, 1909. Serial No. 482,520.

To all whom it may concern:

Be it known that I, HARRY A. LOSER, a citizen of the United States,residing at West Lafayette, in the county of Tippecanoe and State ofIndiana, have invented new and useful Improvements in Apparatus andProcesses for Molding Concrete Forms, reference being bad to thedrawings forming a part thereof.

The purpose of this invention is to provide an improved apparatus formolding concrete forms adapted to produce such forms in two or moresections and assemble and compact them into a unitary structureimmediately upon molding, so that they may set as integral.

It consists in the features of construction and their combinations shownand described as indicated in the claims.

In the drawings :Figure 1 is a side elevation of an apparatus embodyingthis invention, the parts being shown in the position in which theseparate elements are separately molded. Fig. 2 is a side elevation ofthe same with the parts in position for assembling the two separatelymolded elements. Fig. 3 is a side elevation showing the elementsassembled and being compressed for uniting them. Fig. 41.- is a sideelevation showing the two mold-carrying members and the molded formbetween them after substitution of the platen for one of the molds. Fig.5 is a side elevation showing the molded form inverted upon the platenwith the other mold removed. Fig. 6 is a side elevation of the samematter which is shown in Fig. 5 with the upper mold member removedexposing the molded body on the supporting platen. Figs. 7 and 8 areplan views of the upper and lower mold members respectively of a formadapted for molding concrete fence members.

The structure shown in the drawings embodying this invention comprises atrack, A, upon which are mounted two carriages, B and C. Upon each ofthese carriages, there is mounted a mold-carrier, D, said mold carriersbeing fulcrumed upon the proximate upper corners of the framesuperstructure, E, with which the trucks are each provided. Each ofthese mold carriers is provided with a series of transversely extendingrollers, F,

on which the molds respectively are lodged, and at their proximate endseach mold carrier has upstanding guard arms, D to stop the molds andcarry their weight when they are returned to vertical position, ashereinafter explained. The two mold members being formed for shapingrespectively the two elements of the form to be molded, are

filled and properly tamped while in the po- 1 sition shown in Fig. 1, aslight excess of material being left at the top projecting, as shown atm, above the upper margin of the mold. When both molds are filled andtamped the mold carriers are rocked to vercomplete mold comprising bothmembers to-' gether with the molded form of both its elements tamped inproper relation is now held solely upon the mold carrier on therighthand truck. This carrier being now rocked back to horizontalposition, the entire mold comprising both members is moved to the right,running 06 the carrier, first onto the roller supports, G, which areprovided upon the right-hand portion of the superstructure, E, of saidright-hand carriage, and thence on over said roller supports off thesame onto the press bed, H, where also suitable rollers, are provided tofacilitate such movement. The entire mold is now in position between thebed and upper head, J, of the press. The press may be of anysufficiently powerful construction, that shown in the drawings beingsuitable, comprising, in addition to the vertical strain rods, L, theupper beam structure, M, toggle levers, O, 0, connected to and by theinteriorly threaded travelers, P, on the screw shaft, Q, having rightand left threads at its opposite end portions respectively at oppositesides of the operatinghand wheel, R. The operathis description.

tion of the press will be understood from By means of the press the twoelements of the molded form contained in the mold members respectivelyare compressed to the extent of the excess material, w, left protrudingabove the upper margins of the two mold members respectively as abovedescribed, and in such compression are thoroughly unified or renderedintegral at their meeting faces. The press being opened, the upper moldmember, is removed, being constructed for removal in any familiar mannerdictated in detail by the particular form of the molded body. In thedrawings, for simplicity of illustration the form of the mold is such aswould be suitable for molding very simple outlines, from which one-piecemold members will relieve, and said mold members are thereforerepresented as not composed of separable parts. A platen, S, is nowsubstituted for the remote upper mold member, and the molded formcarried in the lower mold member and covered by the platen is moved backoff the press bed onto the mold carrier on the righthand truck. The moldcarriers on both carriages being now swung to vertical position areadvanced toward each other until the platen rests against the left-handmold carrier, and the hooks, Y, on the left-hand mold carrier areengaged with the cooperating studs, Y on the right-hand mold, therebylocking said mold with the molded form included between it and theplaten on said left-hand carrier. The hooks, Y, of the right-handcarrier are now disengaged, and the trucks being separated the mold formis leftcarried on the carrier of the left-hand truck; and said carrierbeing now swung to horizontal position the remaining mold member may beremoved, leaving the form resting upon the platen on the carrier of theleft-hand truck ready to be carried away on said platen for curing.

I claim 1. In combination with a plurality of mold carriages, moldcarriers thereon and movable molds on the carriers respectively, suchcarriers being mounted on the irrespective carriages for tilting tocarry the molds into upright position facing each other; connectionsbetween the carriages for guiding their advance toward each other, andmeans for connecting the mold members together and to one of the tiltingcarriages.

2. In combination with a plurality of mold. carriages, mold carriersthereon and movable molds on the carriers respectively, the carriersbeing fulcrumed on proximate upper corners of their respective carriagesfor tilting to upright position at the proximate ends of the carriages;guides along which the carriages are advanced toward each other to'bringthe upright molds together, and means for locking both mold members toone of the carriages when they are thus together.

3. In combination with a. plurality of mold carriages, mold carriersthereon and movable molds on the carriers respectively, the carriersbeing fulcrumed on upper proximate corners of their respective carriagesand adapted to be rocked over such corners to carry the molds intoupright position facing each other; a truck on which the two carriagesare mounted for travel toward each other, and means. for locking theassembled mold members to one carrier.

t. In combination with a plurality of mold carriages, mold carriersthereon and; movable molds on the carriers respectively, such carriersbeing mounted on their respective carriages for tilting to. carry themolds into upright position facing each other; guides along which thecarriages are ad vanced toward each other to bring the mold memberstogether; means for applying pressure to the mold members for forcingthem together, and means for locking the assembled mold membersalternately to either carrier. A

5. In combination with a plurality of mold carriages, mold carriersthereon; movable molds on the carriers respectively; a track upon whichthe carriers are mounted for traveling toward and from each other; apress adjacent to one of the carriages, the carriers being fulcrumed onupper proximate corners of their respective carriages for locking themolds to upright position facing each other, and means for connectingthe mold on either carrier to the opposite carrier, the press bed andthe adjacent carriage having mold supports at the same level for runningthe mold from the carrier to the press and back.

6. The process of molding concrete forms which consists in forming andcompacting separate elements of such forms in horizontal position inseparate mold members; swinging such mold members to vertical positionand advancing them to bring the elements exposed at their open facesinto contact, exposing the mold members to pressure for forcing themtogether; positioning the entire form horizontally; withdrawing theupper mold member and substituting a platen; swinging the entire formto. a vertical position and advancing it, platen foremost, to avertically positioned carrier; securing the remaining mold member tosuch carrier; swinging the entire form to horizontal position with thecarrier, and removing the remaining mold member. i

7. The process of molding concrete forms which consists in molding andcompacting separate elements of such form in separate horizontallypositioned mold members; supplying surplus concrete at the upper openthen reversing the form and removing the 10 faces of such mold members;swinging both other mold member.

mold members to vertical position and ad- In testimony whereof, I havehereunto set vancing them toward each other to bring my hand at LaFayette, Indiana, this 2 day their respective elements into contact atsaid of March, 1909.

faces; ex osing the two mold members to HARRY A. LOSER. pressure orcompressing the excess of mate- Witnesses: rial together and into theform, removing JOHN D. CRAMER,

one mold member and substituting a platen, H. M. LONG.

